论文部分内容阅读
为分析空间桁架结构的极限承载力，采用基于更新拉格朗日描述的空间梁单元和球面弧长法计算压杆的荷载一位移全过程，将计算得到的压杆荷载一位移曲线分段线性化考虑杆件材料非线性、并据此编制了非线性有限元分析程序
In order to analyze the ultimate bearing capacity of space truss structures, the whole load-displacement process of the compression struts was calculated based on an updated Lagrangian description of the space beam element and the spherical arc length method. The calculated load-displacement curve of the compression rod was piecewise linear. Consider the nonlinearity of bar materials and prepare a nonlinear finite element analysis program accordingly